/*
 * Hello Minecraft! Launcher
 * Copyright (C) 2020  huangyuhui <huanghongxun2008@126.com> and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package com.tungsten.fclcore.util;

import com.tungsten.fclcore.fakefx.beans.InvalidationListener;
import com.tungsten.fclcore.fakefx.beans.Observable;

import java.util.Objects;

public final class Holder<T> implements InvalidationListener {
    public T value;

    public Holder() {
    }

    public Holder(T value) {
        this.value = value;
    }

    @Override
    public void invalidated(Observable observable) {
        // no-op
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(value);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;

        if (!(obj instanceof Holder))
            return false;

        return Objects.equals(this.value, ((Holder<?>) obj).value);
    }

    @Override
    public String toString() {
        return "Holder[" + value + "]";
    }
}
